%0 Journal Article
%T Propolis Components and Biological Activities from Stingless Bees Collected on South Sulawesi, Indonesia
%A Ryo Miyata
%A Muhamad Sahlan
%A Yoshinobu Ishikawa
%A Hiroshi Hashimoto
%A Sari Honda
%A Shigenori Kumazawa
%J HAYATI Journal of Biosciences
%P 82-88
%@ 2086-4094
%D 2020
%R 10.4308/hjb.27.1.82
%X Three new compounds, namely sulabiroins A (1) and B (2), and 2',3'-dihydro-3'-hydroxypapuanic acid (3), were isolated from the propolis of stingless bees (Tetragonulaaff. biroi) collected on South Sulawesi, Indonesia. In addition, ten known compounds, (¨C)-papuanic acid (4), (¨C)-isocalolongic acid (5), isopapuanic acid (6), isocalopolyanic acid (7), glyasperin A (8), broussoflavonol F (9), (2S)-5,7-dihydroxy-4'-methoxy-8-prenylflavanone (10), isorhamnetin (11), (1'S)-2-trans,4-trans-abscisic acid (12), and (1'S)-2-cis,4-trans-abscisic acid (13) were identified. The structures of the new and known compounds were determined by spectroscopic analysis. The absolute configurations of sulabiroins A (1) and B (2) were determined by X-ray crystallography analysis and ECD calculation, respectively. The propolis from stingless bee (Tetragonula aff. biroi) collected on South Sulawesi contained compounds not present in propolis from other regions. Sulabiroin A (1) and isorhamnetin (11) were examined for xanthine oxidase (XO) inhibitory activity as one of biological activities; isorhamnetin (11) exhibited potent XO inhibitory activity, with an IC50 value of 3.9 ¦ÌM.
%K propolis
%K Indonesia
%K podophyllotoxin derivatives
%K chromanone
%K xanthine oxidase
%U https://journal.ipb.ac.id/index.php/hayati/article/view/30313